Max rittberger



(No Model.)

M. RITTBBRGER. BEDSTEAD AND COUCH.

No. 513,419. Patented Jan. 23, 1894.

5 W W. m v a? UNITED STATES PATENT OFFICE.

MAX RITTBERGER, OF POTSDAM, GERMANY.

BEDSTEAD AND COUCH.

SPECIFICATION formingpart of Letters Patent No. 513,419, dated January23, 1894. Application filed December 4, 1890. Serial No- 373,626. (Nomodel.) Patented in England August 9, 1890, No. 12,450.

To all whom, it may concern.-

Be it known that I, MAX RITTBERGER, merchant, of Potsdam, in the Kingdomof Prussia and German Empire, have invented new and useful Improvementsin and Connected with Bedsteads and Couches, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention has been patented in Great grgigain under No. 12,450,dated August 9,

This invention relates to bedsteads and I couches with adjustablehead-rests and it has for its object to enable the occupant of the bedor couch to adjust the position of his head and the upper part of hisbody without the assistance of a third party.

I will describe my invention with reference to the accompanyingdrawings, in which- Figure 1 is an elevation of a couch having theseimprovements applied thereto. Fig. 2 is a plan of Fig. 1. Figs. 3, 4 and5 are details. Fig. 6 is a plan of part of a bedstead or spring mattressalso with these improvements applied thereto.

Referring to Figs. 1, 2, 3, i and 5, it will be seen that on one side ofthe couch I arrange a hand wheel a, which is by preference suitablycovered and protected. This wheel is mounted upon a rotary shaft insuitable bearings and provided with a double screw thread b. 0n thescrewed part of the shaft there is mounted a nut 01 in the lower side ofwhich there is fixed a pin or stud e the lower end of which engages in aslot f formed in one limb of a bell-crank-lever g (Fig. 4). Thebell-crank-lever is pivoted at o to the bracket or fixing It so as toturn thereon. The other limb g of the bell-crank-lever has a\slot formedthereon or connected therewith as shown at k where the slot is formed bymeans of a metal rod t bent twice at right angles and secured to thelimb g of the bell-cranklever.

Within the slot it there is a friction rollerZ mounted on a stud fixedto the carriage n which is capable of sliding on the angle-iron rails 0and which may have affixed to its under side the stop q to preventlateral or vertical motion.

Upon the end of the carriage farther from Z or nearer to the head of thecouch, there is a hinge-joint r to which the bow-lever s is connected.This bow-lever has its limbs made in the shape of a compound curve asshown in Figs. 1 and 5 and engages by means of the pivot 15 15 upon eachof its ends with the lovers 1) and 12 secured to the movable headrest orsupport.

Between the cross-piece w of the head-rest.

u and the head board as of the couch frame there are strongspiral-springs cc which keep the head rest normally raised and theposition of the rest is adjusted by the operation of the devicesdescribed.

The apparatus is operated by turning the hand wheel a which causes thenut dto slide in one or the other direction on the screwed shaft 19 andthus alters the position of the bellcrank-lever 9 through the pin 6. Thecarriage n is consequently also moved and its motion is communicatedthrough the bow-1ever .9 to the head-rest which is thereby raised orlowered.

When the apparatus is applied to a bedstead, the modificationrepresented in Fig. 6 may be employed. In this case two handwheels atare mounted one on each end of the rotary shaft which has formed on itsright and left hand screw threads respectively as shown at b and b Uponeach of these screwed parts there is mounted a nut d having a pin orpivot engaging in the lovers 6" and f respectively. In the opposite endsof these levers there are slots both of which engage with the stud orpin g and the carriage h.

The arrangement and operation of the other parts is as hereinbeforedescribed with reference to Figs. 1 to 5 inclusive.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is

1. In combination a movable head rest, springs supporting the same in araised po sition, a hand wheel, a'sliding carriage operated thereby anda bow connection between said carriage and head rest for adjusting thesame, substantially as described.

2. In combination with the .movable head rest, a hand wheel, a threadedshaft, a nut movable thereon, a lever operated thereby, a slidingcarriage and a bow connection between said sliding carriage and the headrest, substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

MAX RITTBERGER.

Witnesses:

PAUL FISCHER, WILHELM SOHWICTHAL.

